code: def _test_ingest(self):
      marketplace = Marketplace()
      ds_def = marketplace.ingest("marketcap")
      print(ds_def)
      pass
  
file_path: catalyst/tests/marketplace/test_marketplace.py
imports: from catalyst.marketplace.marketplace import Marketplace
  from catalyst.testing.fixtures import WithLogger, CatalystTestCase
label_desc: Use image node_id 4 for calling the TestMarketplace obj's underlying member method code with example usage: obj._test_ingest() without return types